OF THE TONGUES OF THE MAMMALIA. 



743 



epiglottis bisented by the median glosso-epiglottic fold. Small 

 ridges may be pi^esent under the apex and send forward pointed 

 processes (text-fig. 66 C). 



Text-fiffure 66. 





J >'''i' JL * 



The tongues o£ Lemur catta (A) and Ni/cticehiis tardigradus (B) ; C and D. 

 the under surfaces of two examples of the tongue of Lemttr rnfifrons. 



The circamvallate papillse are arranged in Y-formation in must 

 species. They are round or oval, and ai-e surrounded by an 

 annular or lobulated vallum. They may be equal in size, or 

 the most posterior papilla may be the largest. The following 

 arrangements were seen by me or recorded by others : — 



1. Lemur catta : Six papillfe in Y-formation (text-fig. 66 A). 



2. L.fidvus: ISTine papillae in Y-formation (text-fig. 67 A). 



3. L. fulvus rufifrons : Nine papillae in Y-formation (text- 

 fig. 67 E). 



4. L. macaco : Eight papillae in Y-formation (text-fig. 67 F). 



5. L. var'tus : Five papillae in Y-formation. 



6. L. mongoz : Nine papillae in Y-formation (text-fig. 67 I). 



7. L. mongoz : Four papillse forming a double pair. 



8. L. melanocephala : Nine papillae in Y-formation (Miinch). 



9. L. rubriventer : A pair of papillae (Miinch). 



Proc. Zool. Soc— 1921, No. L. 



50 



